<template>
          <view class="cart-container" v-if="cart.length !== 0">
                  <!-- 收获地址 -->
               <my-address></my-address>
          
               <!-- 购物车商品列表的标题区域 -->
             
                  <view class="cart-title">
                            <!-- 左侧的图标 -->
                            <uni-icons type="shop" size="18"></uni-icons>
                            <!-- 描述文本 -->
                            <text class="cart-title-text">购物车</text>
                          </view>
                          <!-- 商品列表区域 -->
                          <block v-for="(goods, i) in cart" :key="i">
                            <my-goods :goods="goods" :show-radio="true" :show-num="true" @radio-change="radioChangeHandler" @num-change="numberChangeHandler"></my-goods>
                          </block>
                      
                            <!-- 结算区域 -->
                    <my-settle></my-settle>

           </view>
        <!-- 空白购物车区域 -->
        <view class="empty-cart" v-else>
          <image src="/static/cart_empty@2x.png" class="empty-img"></image>
          <text class="tip-text">空空如也~</text>
        </view>
</template>

<script>
import badgeMix from '@/mixins/tabbar-badge.js'

import { mapState, mapMutations } from 'vuex'

export default {
  mixins: [badgeMix],
  computed: {
    // 将 m_cart 模块中的 cart 数组映射到当前页面中使用
    ...mapState('m_cart', ['cart']),
  },
  data() {
    return {}
  },
    
  methods:{
      ...mapMutations('m_cart', ['updateGoodsState','updateGoodsCount']),
         // 商品的勾选状态发生了变化
         radioChangeHandler(e) {
           this.updateGoodsState(e)
         },
         // 商品的数量发生了变化
         numberChangeHandler(e) {
            this.updateGoodsCount(e)
         }
  }
}
</script>

<style lang="scss">
.cart-title {
  height: 80rpx;
  display: flex;
  align-items: center;
  padding-left: 12rpx;
  border-bottom: 1px solid #efefef;

  .cart-title-text {
    margin-left: 20rpx;
  }
}
  .cart-container {
    padding-bottom: 50px;
  }
.empty-cart {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 150px;

  .empty-img {
    width: 90px;
    height: 90px;
  }

  .tip-text {
    font-size: 12px;
    color: gray;
    margin-top: 15px;
  }
}
</style>
